Extrusion International 6-2025

51 Extrusion International 6/2025 MEASURING TECHNOLOGY – CASE STUDY Optical Inspection System Ensures rPET Quality In the growing market of sustainable packaging, Hiroyuki Industries (M) Sdn Bhd has established itself as a key player in the production of food-grade recycled PET (rPET). Founded in 2001 and based in Johor Bahru, Malaysia, the company is a subsidiary of Japan’s Hiroyuki Co., Ltd.. Hiroyuki, and is specialized in rPET resin and high-quality packaging solutions tailored to the food and beverage industry. Its product portfolio includes food-grade rPET resin for bottle-to-bottle recycling, as well as strapping bands, stretch lms, and tying twines for general packaging applications. To ensure that only the highest quality material leaves the facility, Hiroyuki relies on the advanced capabilities of SIKORA’s PURITY CONCEPT V system for optical inspection and analysis. I ntegrated into their quality control laboratory, the system inspects rPET samples before shipment and automatically de- tects visual defects such as black specks and discolorations on the pellets, and other contaminants as small as 50 micrometers. By replacing manual inspection pro- cesses, the PURITY CONCEPT V signi cantly increases accuracy and ef ciency in quality control. “With the PURITY CONCEPT V, we have signi cantly improved our ability to detect visual con- taminants of the pellets. This not only enhances product quality but also boosts con dence in our material among our customers,” says Chan Shuang, QA Assistant Manager at Hiroyuki. The use of the PURITY CON- CEPT V has led to measurable improvements in product consis- tency. Defects are detected earlier, allowing for immediate corrective action and reducing the number of non-conforming batches. Each in- spection is recorded and archived, creating a reliable data trail that supports traceability, customer as- surance, and regulatory audits. This data includes the number and size of defects, providing the team with valuable insights for ongoing pro- cess optimization. At Hiroyuki, optical inspection systems like the PURITY CONCEPT V are considered a key element in ensuring compliance with strict in- ternational standards such as those set by the EU, FDA, and EFSA. The system supports the company’s mis- sion to deliver safe, high-perfor- mance recycled materials to its cus- tomers while continually re ning its internal processes. Looking ahead, Hiroyuki aims to evolve into a com- prehensive hub for rPET resin, pre- forms, and bottle production within its region. With a clear focus on in- novation and quality, the company is well-positioned to lead the way in sustainable packaging solutions for years to come. A partner on this way is SIKORA and its inspection technology. SIKORA GmbH Bruchweide 2, 28307 Bremen, Germany www.sikora.net Angel Loh, Chemist at Hiroyuki with rPET pellet samples to be inspected by the PURITY CONCEPT V system